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    4.
    发明专利
    未知

    公开(公告)号：DE59405315D1

    公开(公告)日：1998-04-02

    申请号：DE59405315

    申请日：1994-05-17

    Applicant: BASF AG

    Inventor： LANGHAUSER FRANZ ,  KERTH JUERGEN ,  MUELLER PATRIK ,  KERSTING MEINOLF ,  SCHWEIER GUENTHER

    IPC: C08F2/34 ,  C08F4/642 ,  C08F4/646 ,  C08F4/68 ,  C08F297/08

    Abstract: PCT No. PCT/EP94/01591 Sec. 371 Date Nov. 9, 1995 Sec. 102(e) Date Nov. 9, 1995 PCT Filed May 17, 1994 PCT Pub. No. WO94/28042 PCT Pub. Date Dec. 8, 1994Multiphase block copolymers of propylene comprising a) a polymer of propylene with from 0 to 5% by weight of further C2-C10 1-alkenes, b) a copolymer of propylene with from 5 to 98% by weight of further C2-C10 1-alkenes, the multiphase block copolymers having a melting point of less than 155 DEG C. and a stiffness (shear modulus G) conforming to the following condition (I): (I) where Ma) denotes the amount of propylene polymer a) and Mco denotes the amount of the multiphase block copolymer. are obtainable in particular by polymerization by means of metallocene-containing catalyst systems.\!

    5.
    发明专利
    未知

    公开(公告)号：ES2112000T3

    公开(公告)日：1998-03-16

    申请号：ES95113800

    申请日：1995-09-02

    Applicant: BASF AG

    Inventor： MUELLER PATRIK ,  KERSTING MEINOLF

    IPC: C08F2/34 ,  C08F4/642 ,  C08F8/50 ,  C08F210/06 ,  C08F210/16 ,  C08F297/08

    Abstract: Propylene-ethylene (EP) copolymers with a high rubber content (I) are obtd. by 2-stage gas-phase polymerisation in an agitated solid bed with the aid of a Ziegler-Natta catalyst system contg. a sold Ti-contg. component and an Al cpd. as cocatalyst. The process comprises: (1) polymerisation of propylene at 15-40 bar (P1) and 50-90 degrees C with a residence time of 0.5-5 hrs., followed by sepn. of the polymer obtd., and (2) polymerisation of a mixt. of ethylene (E) and propylene (P) in the presence of the stage 1 prod. and a 1-8C alkanol, for 0.5-5 hrs. at 60-100 degrees C and at a pressure (P2) in the range of 5-30 bar and at least 2 bar below P1; the ratio of partial pressures of P:E in stage (2) is (0.5:1)-(5:1), and the wt. ratio for monomer conversion in stages (1):(2) = (0.9:1)-(0.4:1). Also claimed is: (i) the above process as such, and (ii) film, fibres and moulded prods. obtd. from (I).

    9.
    发明专利
    未知

    公开(公告)号：DE4432798A1

    公开(公告)日：1996-03-21

    申请号：DE4432798

    申请日：1994-09-15

    Applicant: BASF AG

    Inventor： MUELLER PATRIK ,  KERSTING MEINOLF

    IPC: C08F2/34 ,  C08F4/642 ,  C08F8/50 ,  C08F210/06 ,  C08F210/16 ,  C08F297/08 ,  C08L23/16 ,  C08L53/00 ,  D01F6/30

    Abstract: Propylene-ethylene (EP) copolymers with a high rubber content (I) are obtd. by 2-stage gas-phase polymerisation in an agitated solid bed with the aid of a Ziegler-Natta catalyst system contg. a sold Ti-contg. component and an Al cpd. as cocatalyst. The process comprises: (1) polymerisation of propylene at 15-40 bar (P1) and 50-90 degrees C with a residence time of 0.5-5 hrs., followed by sepn. of the polymer obtd., and (2) polymerisation of a mixt. of ethylene (E) and propylene (P) in the presence of the stage 1 prod. and a 1-8C alkanol, for 0.5-5 hrs. at 60-100 degrees C and at a pressure (P2) in the range of 5-30 bar and at least 2 bar below P1; the ratio of partial pressures of P:E in stage (2) is (0.5:1)-(5:1), and the wt. ratio for monomer conversion in stages (1):(2) = (0.9:1)-(0.4:1). Also claimed is: (i) the above process as such, and (ii) film, fibres and moulded prods. obtd. from (I).

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